To obtain a polymer having a narrow mol.wt. distribution, a high stereospecificity, m.p., crystallinity, and hardness, by carrying out an olefin (co)polymerization in the presence of a catalyst comprising a specific metallocene as a transition metal compd., an aluminoxane as a cocatalyst, and/or a specific salt-like compd.
A salt-like compd. used is one expressed by formulae II or III (R' is an optionally fluorinated aryl; and X is 1-3). A metallocene is a compd. expressed by the formula. In the formula, M1 is a group IVb, Vb, or VIb metal in the periodic table, R1 and R2 are each the same or different, H, a 1-10C alkyl group or the like; R3 and R4 are each the same or different. H, halogen, a 1-10C alkyl group or the like; R5 and R6 are each the same or different, of the same excluding H, as defined in R3 and R4; R7 is -Ge-, -O-, or the like; R8, R9, and R10 are each the same or different, H, halogen, a 1-10C alkyl group or the like; and, m and n are each the same or different, 0, 1, or 2.
| WO/2005/019276 | PROCESS FOR MAKING POLYETHYLENE |
| WO/1996/016993 | METHOD OF CONTROLLING MOLECULAR WEIGHT OF STYRENIC POLYMER |
| JPH1067815 | OLEFIN POLYMERIZATION CATALYST |
ANTBERG MARTIN
SPALECK WALTER
ROHRMANN JUERGEN
DOLLE VOLKER
Next Patent: PREPARATION OF WATER ABSORBENT RESIN